Beauty ingredient research

Beauty ingredients explained in plain English

Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.

20769

Reviewed ingredients

524

Low-concern standouts

2884

Need usage caution

Showing 60 of 265
AllUV absorberUV filterabrasiveabsorbentacne treatmentactiveactive ingredientadhesivealkalizing agentamino acidanti-aginganti-androgenanti-cavityanti-cavity agentanti-inflammatoryanti-irritantanticariesanticavity agentantidandruffantifungalantimicrobialantioxidantantiperspirantantiplaqueastringentbarrier repairbarrier supportbarrier-repairbarrier-supportbinderbinding agentbiotechbiotechnologybond-builderbotanicalbotanical extractbotanical oilbotanical waterbrighteningbrightening agentbufferbuffering agentcell-communicating ingredientceramidechelating agentchemicalchemical intermediateclaycleansercleansingcleansing agentcolorantconditionerconditioningconditioning agentcooling agentcosmeticcosmetic additivecosmetic colorantcosmetic ingredientcosmetic pigmentcosmetic powdercosmetic-texturizercosmetic-waxcosmeticscrosslinking agentdelivery agentdelivery systemdenaturantdeodorantdeodorant agentdepigmenting agentdepilatorydepilatory agentdesensitizing agentdyedye intermediatedye precursordye-intermediateemollientemulsifierenzymeessential oilexfoliantexperimentaleyelashfermentfilm formerfilm-formerfilm-formingfilm-forming agentfirming agentfixativeflavoring agentformulationfragrancefragrance ingredientfunctional ingredientgashair carehair colorhair coloranthair conditionerhair dyehair removalhair-carehair-colorhaircarehumectantindustrialinsecticideintermediatelashlash carelash enhancerlash-and-browlip carelipidmakeupmarine extractmasking agentmicrobiomemicrobiome modulatormineralmoisturizernail carenail-careocclusiveoilopacifieropacifying agentoptical agentoral careotheroxidative dyeoxidative dye precursoroxidizing agentpH adjusterpain reliefpenetration enhancerpeptidepersonal careph adjusterpharmaceuticalpheromonepigmentplant oilplasticizerpolymerpolymer precursorprebioticprescription-drugpreservativepreservative boosterprobioticprocessing agentprocessing aidpropellantproteinpurifyingreducing agentretinoidscalp caresebum regulatorsebum-regulatorself-tannerself-tanningsensory additivesensory agentsensory modifiersiliconeskin barrierskin barrier supportskin conditionerskin conditioningskin conditioning agentskin lighteningskin protectantskin-conditioningskin-conditioning agentskin-identicalskin-identical ingredientskin-lighteningskin-lightening agentskincaresolventsoothingsoothing agentstabilizerstimulantsunscreensurfactantsyntheticsynthetic colorantsynthetic dyesynthetic resinsynthetic-coloranttexture enhancertexturizerthickenertoneruv-absorberuv-filtervasoactivevasodilatorviscosity controlviscosity controllingviscosity controlling agentvitaminwax

Humectant

Agave Ferment Filtrate

Saccharomyces/Agave Americana Leaf Ferment Filtrate

4.0

A gentle fermented ingredient that may help hydrate and soothe skin, but research is still early.

Irritation

low

Source

biotech

beautyskincarehumectantsoothing
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Soothing Agent

Allantoin Polygalacturonic Acid

Allantoin Polygalacturonic Acid

4.3

A gentle, multi-tasking ingredient that calms irritation and helps skin hold onto moisture — ideal for sensitive or stressed skin.

Irritation

low

Source

semi-synthetic

beautyskincarehumectantsoothing
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Soothing Agent

Aloe Arborescens Leaf Powder

Aloe Arborescens Leaf Powder

4.0

A gentle, plant-based powder that soothes and hydrates skin, similar to Aloe vera but with a slightly different nutrient profile.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Aloe Callus Culture Extract

Aloe Barbadensis Callus Culture Extract

4.3

A sustainable, lab-grown aloe extract that soothes skin and fights free radicals without the variability of traditional aloe.

Irritation

low

Source

biotech

beautyskincaresoothing
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Soothing Agent

Aloe Callus Powder

Aloe Barbadensis Callus Powder

4.0

A gentle, plant-based powder that soothes and protects skin, but its benefits are less studied than traditional aloe leaf juice.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Aloe Fermented Pine Extract

Aloe Arborescens Leaf Extract, Pinus Densiflora Leaf Extract, Saccharomyces Ferment

3.8

A gentle fermented botanical blend that may help calm skin and provide antioxidant support, though research is limited.

Irritation

low

Source

natural

beautyskincareantioxidantsoothing
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Soothing Agent

Aloe Phytoplacenta Extract

Aloe Barbadensis Phytoplacenta Extract

4.0

A gentle, plant-derived ingredient that may help calm irritation and support skin's natural repair processes, though human studies are limited.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Aloe Sprout Extract

Aloe Barbadensis Sprout Extract

4.0

Aloe sprout extract is a gentle, antioxidant-rich ingredient that hydrates and soothes skin, but research on its specific benefits is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Aloe Vera

Aloe Barbadensis Leaf Juice

4.5

Aloe vera is a gentle, hydrating ingredient that can help calm irritated skin, but its benefits are often overstated in marketing.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Aloe Vera Callus Extract

Aloe Barbadensis Callus Extract

4.0

A gentle, lab-grown aloe extract that soothes and hydrates without the variability of traditional aloe.

Irritation

low

Source

biotech

beautyskincaresoothing
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Soothing Agent

Alpinia Formosana Leaf/Stem Water

ALPINIA FORMOSANA LEAF/STEM WATER

3.8

A gentle, plant-derived water that may help calm skin and provide antioxidant benefits, though research is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing
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Antioxidant

Anemarrhena Root Extract

ANEMARRHENA ASPHODELOIDES ROOT EXTRACT

4.0

Anemarrhena Root Extract is a gentle botanical with antioxidant and soothing potential, but human skin research is still limited.

Irritation

low

Source

natural

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Soothing Agent

Aquamarine Extract

Aquamarine Extract

3.5

Aquamarine extract is a trendy mineral-rich ingredient that may offer soothing and hydrating benefits, but scientific evidence is limited.

Irritation

low

Source

natural

beautyskincaresoothing
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Antioxidant

Aralia Callus Culture Extract

Aralia Continentalis Callus Culture Extract

4.0

A lab-grown plant extract that may help calm skin and fight free radical damage, though human research is still limited.

Irritation

low

Source

biotech

beautyskincareantioxidantsoothing
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Soothing Agent

Arnica Flower Water

ARNICA MONTANA FLOWER WATER

3.8

Arnica flower water is a gentle, natural anti-inflammatory that can help calm redness and soothe irritated skin, but it is not a treatment for wounds or serious skin conditions.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Artemisia Annua Herb Oil

ARTEMISIA ANNUA HERB OIL

4.0

A gentle, antioxidant-rich oil from sweet wormwood that may help calm skin and fight environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Artemisia Capillaris Water

ARTEMISIA CAPILLARIS FLOWER/LEAF/STEM WATER

4.0

A gentle, antioxidant-rich botanical water that helps calm irritation and provides light hydration, ideal for sensitive or reactive skin.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Aster Spathulifolius Oil

Aster Spathulifolius Leaf/Stem Oil

3.8

A gentle, plant-derived oil with potential soothing and antioxidant benefits, though research on its cosmetic use is still limited.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Banana Flower Water

Musa Sapientum Flower Water

3.8

A mild, aromatic floral water that offers gentle hydration and soothing benefits, ideal for sensitive or irritated skin.

Irritation

low

Source

natural

beautyskincaresoothing
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Antioxidant

Betony Extract

Stachys Officinalis Flower/Leaf/Stem Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, though human studies are limited.

Irritation

low

Source

natural

beautyskincareantioxidantsoothing
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Skin conditioning

Bifida & Skullcap Ferment Extract

Bifida/Scutellaria Baicalensis Root Extract Ferment Lysate Extract Filtrate

4.0

A fermented probiotic-antioxidant hybrid that may help calm sensitive skin and reinforce the skin barrier over time.

Irritation

low

Source

biotech

beautyskincareantioxidantsoothing
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Skin conditioning agent

Bifida Deer Antler Ferment Filtrate

Bifida Ferment Filtrate, Hydrolyzed Deer Antler Extract

3.8

A fermented probiotic and deer antler blend that may help calm and strengthen the skin barrier, but human research is limited.

Irritation

low

Source

mixed

beautyskincareantioxidantsoothing
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Skin conditioning

Bifida Ginseng Ferment Filtrate

Bifida/Panax Ginseng Root Cell Culture Extract Ferment Filtrate

4.0

A gentle, fermented blend that may help strengthen the skin barrier and calm sensitivity, but research is still emerging.

Irritation

low

Source

biotech

beautyskincareantioxidantsoothing
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Soothing Agent

Blackcurrant Leaf Water

RIBES NIGRUM LEAF WATER

4.0

A mild, antioxidant-rich botanical water that can help soothe and refresh the skin without irritation.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing agent

Blackthorn Flower Water

Prunus Spinosa Flower Water

3.8

A mild, fragrant floral water that can add a touch of soothing refreshment to skincare, but its benefits are largely anecdotal and not backed by strong research.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Blue Lotus Flower Water

Nymphaea Coerulea Flower Water

3.8

A gentle, aromatic water that may help calm skin and provide mild antioxidant benefits, but research is limited.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Blue Tansy Callus Extract

TRIGONOTIS PEDUNCULARIS CALLUS EXTRACT

4.0

A gentle, plant-based ingredient that helps calm redness and provides antioxidant protection, though research is still early.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Boswellia Sacra Resin Water

Boswellia Sacra Resin Water

4.0

A gentle, water-based extract of frankincense resin that helps calm skin and provides antioxidant protection.

Irritation

low

Source

natural

beautyskincaresoothing
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Humectant

Bull Kelp Extract

Nereocystis luetkeana extract

4.0

A mineral-rich seaweed extract that hydrates and soothes skin, generally safe for most skin types.

Irritation

low

Source

natural

beautyskincarehumectantsoothing
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Soothing agent

Burdock Root Powder

Arctium Lappa Root Powder

3.8

Burdock root powder is a gentle, plant-based ingredient that may help calm irritated skin and provide antioxidant protection.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Burdock Seed Water

Arctium Lappa Seed Water

3.8

A mild, plant-derived water that may help calm irritated skin and provide antioxidant protection, but research is limited.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Cabbage Leaf Water

Brassica Oleracea Capitata Leaf Water

3.8

Cabbage leaf water is a gentle, hydrating ingredient that may help soothe the skin, but research on its specific benefits is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing agent

Calamine

Calamine

4.0

Calamine is a gentle, time-tested ingredient that helps calm irritated skin and absorb excess oil, making it a good choice for sensitive or breakout-prone skin.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Calendula Flower Extract

Calendula Officinalis Flower Extract

4.3

A gentle, time-tested botanical that helps calm irritated skin and supports a healthy-looking complexion.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Calendula Flower Water

Calendula Officinalis Flower Water

4.0

A mild, soothing botanical water that can help calm irritated or sensitive skin without stripping moisture.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Calendula Juice

CALENDULA OFFICINALIS FLOWER/LEAF/STEM JUICE

4.0

A gentle, plant-derived juice that helps calm irritated skin and provides antioxidant protection without clogging pores.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing agent

Camphor Branch/Stem Water

Cinnamomum Camphora Branch/Stem Water

3.5

A gentle, aromatic water from the camphor tree that may offer mild soothing benefits, but lacks strong clinical evidence for skincare claims.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing agent

Capsaicinyl Glucosides

Capsaicinyl Glucosides

3.5

A gentler, glucoside-bound version of chili pepper's active compound, used to promote a warm, tingling sensation and support microcirculation in skincare.

Irritation

moderate

Source

semi-synthetic

beautyskincaresoothing
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Soothing Agent

Carrot Water

Daucus Carota Sativa Water

3.8

Carrot water is a gentle, antioxidant-rich hydrosol that can soothe and lightly condition skin, but it is not a substitute for concentrated carrot seed oil or beta-carotene serums.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Centella & Chamomile Complex

CENTELLA ASIATICA/CHAMOMILLA RECUTITA FLOWER/LEAF/EXTRACT

4.3

A gentle, plant-based duo that helps calm irritation and supports skin barrier repair without clogging pores.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Centella Asiatica Leaf Water

CENTELLA ASIATICA LEAF WATER

4.5

A gentle, hydrating base ingredient that soothes irritation and supports skin barrier health, ideal for sensitive or reactive skin.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Centella Asiatica Powder

CENTELLA ASIATICA LEAF/STEM POWDER

4.0

A gentle, plant-based powder that helps calm irritated skin and supports a healthy skin barrier, but its effectiveness depends on the specific active compounds present.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Chamomile Extract

CHAMOMILLA VULGARIS EXTRACT

4.3

Chamomile extract is a time-tested, gentle soother for sensitive or irritated skin, but those with ragweed allergies should patch test first.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Chamomile Flower Extract

CHAMOMILLA VULGARIS FLOWER EXTRACT

4.3

A gentle, time-tested botanical that helps calm irritated skin and reduce redness, ideal for sensitive or reactive skin types.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Chamomile Flower Juice

CHAMOMILLA RECUTITA (MATRICARIA) FLOWER JUICE

4.0

Chamomile flower juice is a gentle, natural soother for sensitive or irritated skin, but its effectiveness depends on the concentration and formulation.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Chamomile Flower Water

CHAMOMILLA RECUTITA (MATRICARIA) FLOWER/LEAF/STEM WATER

4.0

A mild, plant-derived water that can help calm sensitive or irritated skin, but its benefits are subtle and not a substitute for targeted treatments.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Chamomile Leaf Extract

CHAMOMILLA RECUTITA LEAF EXTRACT

4.0

A gentle, plant-based ingredient that helps calm redness and irritation, suitable for most skin types including sensitive skin.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Cherry Blossom Flower Water

Prunus Serrulata Flower Water

4.0

A gentle, lightly fragrant floral water that adds a touch of soothing hydration and a pleasant scent to skincare products.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Cibotium Barometz Oil

CIBOTIUM BAROMETZ OIL

3.5

A fern-derived oil with potential soothing and antioxidant benefits, but research is limited and it is not widely studied in modern skincare.

Irritation

low

Source

natural

beautyskincaresoothing
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Antioxidant

Citrus & Herb Ferment Extract

CITRUS UNSHIU PEEL/(ANGELICA GIGAS/ASTRAGALUS MEMBRANACEUS/ATRACTYLODES MACROCEPHALA/LICORICE/PAEONIA LACTIFLORA/PANAX GINSENG/REHMANNIA ROOT)/PORIA COCOS EXTRACT

3.8

A complex blend of citrus, medicinal herbs, and mushroom that may offer antioxidant and soothing benefits, but individual ingredient concentrations are unknown.

Irritation

low

Source

natural

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Soothing Agent

Clary Sage Hydrosol

Salvia Sclarea Flower/Leaf/Stem Water

4.0

Clary Sage Hydrosol is a mild, aromatic water that can help soothe and balance the skin, but its benefits are largely anecdotal and based on traditional use.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Copaiba Oil

Copaifera Officinalis (Balsam Copaiba) Resin

4.0

Copaiba oil is a gentle, plant-based ingredient that helps calm redness and support a balanced skin barrier without clogging pores.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Cornflower Floral Water

Centaurea Cyanus Flower Water

4.0

A mild, soothing floral water that can help calm irritated or sensitive skin, but its benefits are subtle and not a substitute for targeted treatments.

Irritation

low

Source

natural

beautyskincaresoothing
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